人字形角对导孔型板壳式换热器壳程流体流动与传热特性的影响  

Effect of herringbone angle on flow and heat transfer characteristics of the fluid on shell side of guide groove type shell-and-plate heat exchanger

作　　者：王珂[1,2] 孙光毅 安博 代雪颖 刘遵超[1,2] WANG Ke;SUN Guangyi;AN Bo;DAI Xueying;LIU Zunchao(School of Mechanics and Safety Engineering,Zhengzhou University,Zhengzhou 450001,China;Key Laboratory of Process Heat Transfer and Energy Saving of Henan Province,Zhengzhou University,Zhengzhou 450002,China)

机构地区：[1]郑州大学力学与安全工程学院,郑州450001 [2]郑州大学河南省过程传热与节能重点实验室,郑州450002

出　　处：《压力容器》2023年第3期7-15,共9页Pressure Vessel Technology

基　　金：国家自然科学基金项目(51776190);河南省科技攻关项目(No.222102320230)。

摘　　要：以导孔型板壳式换热器为研究对象,通过数值模拟探究了双人字形板波纹角度的变化对壳程流体流动、传热性能的影响,采用粒子图像测速(PIV)对壳程流场分布和流速进行了试验验证。结果表明:PIV试验与数值模拟得到壳侧速度矢量分布一致,轴向速度的平均误差为2.93%,最大相对误差为13.24%。与矩形板式换热器不同的是,导孔型板壳式换热器的换热能力和压降损失随着角度的增大而提升,在β=60°达到临界点,随后随着β的增大换热能力有所削弱。壁面平均涡强Se与换热效率Nu存在对应关系,Nu随着Se的增大而增大,拟合的关联式误差在±9%以内。此外,在研究范围内,不同β下的综合性能随着质量流量m的增加而减小,β=30°时综合性能最好,该研究结果可为工业设计选择提供参考。The effects of the variation of corrugation angle on flow and heat transfer performance of the shell-side fluid were investigated by using guide groove type shell-and-plate heat exchanger as the research object through numerical simulation,and the distribution of the shell-side flow field was experimentally verified using PIV.The results show that the velocity vector distribution on the shell side obtained by PIV experiment is consistent with numerical simulation,with an average error of 2.93%and a maximum relative error of 13.24%for axial velocity.Unlike the rectangular plate heat exchanger,the heat transfer capacity and pressure drop of the guide groove type shell and plate heat exchanger increase with the increase of the angle and reach a critical point atβ=60°,followed by a decrease in heat transfer capacity asβincreases.The wall average vortex strength Se corresponds to the heat transfer efficiency Nu,which increases as Se increases,with a fitting correlation error within±9%.In addition,within the range of the study,the comprehensive performance under differentβdecreases with the increase of mass flow rate m,and the best comprehensive performance is achieved atβ=30°.The research results can provide reference for industrial design selection.

关 键 词：板壳式换热器 人字形角度 流动特性 板片结构 粒子图像测速 

分 类 号：TH49[机械工程—机械制造及自动化] TQ051.5[化学工程] TQ021.3